Intestinal barrier sleeve release system
View Patent ↗An intestinal barrier sleeve release system includes a tubular housing having a first opening at one end and a second opening at the other end. A tubular sleeve to be released is disposed in the housing. A release body connected to the one end of the tubular sleeve is disposed at the first opening of the housing and is made of a material that can be dissolved and absorbed in human intestines. An inner sheath, a middle sheath and an outer sheath are sequentially set and move relative to each other. The inner sheath and the middle sheath are operated to move axially, the release body is disengaged from the housing, and the tubular sleeve moves out of the housing and is released at a specified position of the human intestines.
1. An intestinal barrier sleeve release system, including a tubular housing having a first opening at one end and a second opening at the other end, a folded tubular sleeve to be released disposed in the housing, the intestinal barrier sleeve release system comprising:
a release body disposed at the first opening, fixedly connected to one end of the tubular sleeve, and made of a material that is able to be dissolved and absorbed in human intestines, the release body including:
an internal core having a body portion and a tubular sleeve connecting portion formed by extending the body portion, the tubular sleeve connecting portion fixedly connected to the one end of the tubular sleeve; wherein the body portion has an outer contour in a hemispherical shape, and the tubular sleeve connecting portion is connected to a planar portion of the body portion; and
a casing being in a hemisphere shape and covering the body portion; wherein an annular platform is formed on the periphery of an end surface of the hemispherical casing, and is abutted against the first opening of the housing; wherein the annular platform is configured to be broken under force;
a push assembly including an inner sheath, a middle sheath and an outer sheath sequentially set and able to move relative to each other, the inner sheath partially located in the housing and connected to the release body, the middle sheath having a piston stopper in the housing fixedly sleeved on an end of the middle sheath that is adjacent to the tubular sleeve, and the outer sheath located outside the housing and having an end fixedly connected to the second opening;
wherein, after the annular platform is broken under the force, the inner sheath and the middle sheath are operated to move axially in a direction toward the first opening, the release body is disengaged from the housing, so as to move the tubular sleeve out of the housing and to be released at a specified position of the human intestines.
2. The intestinal barrier sleeve release system according to claim 1 , wherein an end of the inner sheath sequentially passes through the tubular sleeve connecting portion, the body portion and the casing of the internal core.
3. The intestinal barrier sleeve release system according to claim 2 , wherein the internal core is physically connected to the casing.
4. The intestinal barrier sleeve release system according to claim 2 , wherein a damper sheath is sleeved on a portion of the inner sheath passing out of the internal core.
5. The intestinal barrier sleeve release system according to claim 4 , wherein the internal core is physically connected to the casing.
6. The intestinal barrier sleeve release system according to claim 1 , wherein a surface of the body portion of the internal core and a surface of the casing facing a release direction of the tubular sleeve are round smooth surfaces.
7. The intestinal barrier sleeve release system according to claim 6 , wherein the internal core is physically connected to the casing.
8. The intestinal barrier sleeve release system according to claim 1 , wherein the casing has an outer contour matches the outer contour of the body portion in shape.
9. The intestinal barrier sleeve release system according to claim 8 , wherein the internal core is physically connected to the casing.
10. The intestinal barrier sleeve release system according to claim 1 , wherein the internal core is physically connected to the casing.
11. The intestinal barrier sleeve release system according to claim 1 , wherein the other end of the tubular sleeve is fixedly connected to a stent, and the stent is an elastic memory alloy braided stent in a tubular mesh form.
12. The intestinal barrier sleeve release system according to claim 1 , wherein the middle sheath has a first extension end extending from the other end of the outer sheath, the first extension end is connected to a first handle, the first handle is provided with a Luer taper communicating the outside with the inside of the middle sheath, the inner sheath has a second extension end extending from the first extension end, and the second extension end is connected to a second handle.